箱门中间有一玻璃窗，以供观察工作室内之情况。

There is a glass window in the center of the door for observing the working chamber.

youdao

箱门中间有一玻璃窗，以供观察工作室内之情况。

There is a glass window in the center of the door for observing the working chamber.

youdao